• Title/Summary/Keyword: Scalable architecture

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FPGA Design of Open-Loop Frame Prediction Processor for Scalable Video Coding (스케일러블 비디오 코딩을 위한 Open-Loop 프레임 예측 프로세서의 FPGA 설계)

  • Seo Young-Ho
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.5C
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    • pp.534-539
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    • 2006
  • In this paper, we propose a new frame prediction filtering technique and a hardware(H/W) architecture for scalable video coding. We try to evaluate MCTF(motion compensated temporal filtering) and hierarchical B-picture which are a technique for eliminate correlation between video frames. Since the techniques correspond to non-causal system in time, these have fundamental defects which are long latency time and large size of frame buffer. We propose a new architecture to be efficiently implemented by reconfiguring non-causal system to causal system. We use the property of a repetitive arithmetic and propose a new frame prediction filtering cell(FPFC). By expanding FPFC we reconfigure the whole arithmetic architecture. After the operational sequence of arithmetic is analyzed in detail and the causality is imposed to implement in hardware, the unit cell is optimized. A new FPFC kernel was organized as simple as possible by repeatedly arranging the unit cells and a FPFC processor is realized for scalable video coding.

The Design of Sensor System for Scalable Mobile Meteorological Information Services (확장 가능한 모바일 기상 정보 서비스를 위한 센서 시스템의 설계)

  • Choi, Jin-Oh
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.6
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    • pp.1327-1332
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    • 2011
  • In the mobile meteorological information services, an existing sensor system should be expanded to serve precise information. This is because of large cost problem to add the existing sensors. This thesis proposes a system architecture to construct scalable mobile meteorological information services and suggests mobile phone, sensor network, and public traffic vehicle as expended sensors. The proposed scalable sensors are compared each other and analysed the results to evaluated their strength and weakness. In this system, based on the characteristics of the sense data collected at server, a data processing methods are proposed to support efficient query processing. The proposing data processing methods have several benefits. They compress some data volume sensed by various sources on some area at some time to a logical unit. Still it could preserve same services quality.

Scalable Resource Sharing using Group Similarity Function in Grid System (그리드 시스템에서 그룹유사함수를 이용한 확장성 있는 자원공유)

  • Mateo, Romeo Mark A.;Lee, Jae-Wan;Lee, Mal-Rey
    • Journal of Internet Computing and Services
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    • v.11 no.4
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    • pp.73-83
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    • 2010
  • The scalability of a grid system should be efficiently designed to handle the increasing number of grid users. This paper presents a scalable resource sharing mechanism among virtual organizations (VO) in grid environment by the scalable virtual organizations (SVO). The proposed grid architecture is composed of standard services of a grid system to manage the SVO. We propose a group similarity function which is used to determine similarities among VOs to select the VOs to merge. We compared other similarity functions to the GSF and determined the throughput performance of the SVO using simulation for grid system.

A Scalable Hybrid P2P MMOG Cloud Architecture for Load Management in a Region (영역내 부하 관리를 위한 확장적 하이브리드 P2P MMOG 클라우드 구조)

  • Kim, Jin-Hwan
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.22 no.3
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    • pp.83-91
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    • 2022
  • This paper proposes a scalable hybrid P2P(peer-to-peer) cloud architecture for MMOGs(massively multiplayer online games) which includes load management schemes for each region. A game world is divided into several game regions and each game region is serviced by at least one peer(player) in this MMOG cloud environment. The load must be managed regionally to support smooth interactions among them even in the presence of a high concentration of players in a specific region. In the proposed architecture where an efficient and effective provisioning of resources is realized, it is suitable for players to interact with cloud servers effectively and it avoids bottlenecks of the current client-server MMOG architecture. This architecture also relieves a lot of computational power and network traffic, the load on the servers in the cloud by exploiting the capacity of the players. Simulation results show that the proposed hybrid P2P cloud architecture can reduce the considerable bandwidth at the server compared to the client server architecture as the available resources grow with the number of players in crowding or hotspots.

A System Level Network-on-chip Model with MLDesigner

  • Agarwal, Ankur;Shankar, Rabi;Pandya, A.S.;Lho, Young-Uhg
    • Journal of information and communication convergence engineering
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    • v.6 no.2
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    • pp.122-128
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    • 2008
  • Multiprocessor architectures and platforms, such as, a multiprocessor system on chip (MPSoC) recently introduced to extend the applicability of the Moore's law, depend upon concurrency and synchronization in both software and hardware to enhance design productivity and system performance. With the rapidly approaching billion transistors era, some of the main problem in deep sub-micron technologies characterized by gate lengths in the range of 60-90 nm will arise from non scalable wire delays, errors in signal integrity and non-synchronized communication. These problems may be addressed by the use of Network on Chip (NOC) architecture for future System-on-Chip (SoC). We have modeled a concurrent architecture for a customizable and scalable NOC in a system level modeling environment using MLDesigner (from MLD Inc.). Varying network loads under various traffic scenarios were applied to obtain realistic performance metrics. We provide the simulation results for latency as a function of the buffer size. We have abstracted the area results for NOC components from its FPGA implementation. Modeled NOC architecture supports three different levels of quality-of-service (QoS).

Scalability Estimations of a Workcase-based Workflow Engine (워크케이스 기반 워크플로우 엔진의 초대형성 성능 평가)

  • Ahn, Hyung-Jin;Park, Min-Jae;Lee, Ki-Won;Kim, Kwang-Hoon
    • Journal of Internet Computing and Services
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    • v.9 no.6
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    • pp.89-97
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    • 2008
  • Recently, many organizations such as companies or institutions have demanded induction of very large-scale workflow management system in order to process a large number of business-instances. Workflow-related vendors have focused on physical extension of workflow engines based on device-level clustering, so as to provide very large-scale workflow services. Performance improvement of workflow engine by simple physical-connection among computer systems which don't consider logical-level software architecture lead to wastes of time and cost for construction of very large-scale workflow service environment. In this paper, we propose methodology for performance improvement based on logical software architectures of workflow engine. We also evaluate scalable performance between workflow engines using the activity instance based architecture and workcase based architecture, our proposed architecture. Through analysis of this test's result, we can observe that software architectures to be applied on a workflow engine have an effect on scalable performance.

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A Scalable Content-Sharing Architecture for High-quality TV Programs (확장 가능한 실시간 고화질 TV 컨텐츠 공유 아키텍처)

  • Chung, Sungwook
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.18 no.11
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    • pp.2651-2657
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    • 2014
  • It can be organized with PVRs and FC-AL for a high-quality TV content-sharing architecture. It is, however, not easy to configure a large community network with the FC-AL since it has a 7-bit address space with supporting up to 127 users. We, therefore, propose a novel scalable FC-AL multiple-loop architecture using shared disks, which does not need to use expensive and load-concentrated switches. In this article, our suggested architecture shows a superb startup delay, such as less than 20msec. In addition, it demonstrates outstanding scalability, such that the number of accomodable users increases almost linearly according to adding loops. Lastly, it reveals exceptional time-shifting hours, that is, which supports more than 140 hours with 1000 users.

Design and Implementation of Scalable VOD System on Linux (Linux상에서 확장 가능한 VOD시스템의 설계 및 구현)

  • 김정원;김인환;정기동
    • Journal of Korea Multimedia Society
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    • v.2 no.3
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    • pp.265-276
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    • 1999
  • Video on Demand (VOD) system is definitely one of main applications in upcoming multimedia era. In this research, we have designed and implemented a host-based scalable VOD system (SVOD) which is composed of low cost PC servers and runs on Linux kernel that is currently spotlighted in enterprise and research domains. Our contribution is as follows: first, the previous Ext2 file system was modified to efficiently support continuous media like MPEG stream. Second, the storage server features a host-based scalable architecture. Third, a software MPEG decoder was implemented using Microsoft's DirectShow$\circledR$COM. Finally, flow control between client and server is provided to suppress overflow and underflow of client circular buffer and supports FF VCR operation. We have known that it is possible to develop a thread-based and scalable VOD system on low cost PC servers and free Linux kernel.

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Issues in Next Generation Streaming Server Design

  • Won, Youjip
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2001.11a
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    • pp.335-354
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    • 2001
  • .Next Generation Multimedia Streaming Technology Massive Scale Support $\rightarrow$ Clustered Solution Adaptive to Heterogeneous Network daptive to Heterogeneous Terminal Capability Presentation Technique .SMART Server Architecture .HERMES File System .Clustered Solution . High Speed Storage Interconnect .' Content Partitioning . Load Management . Support for Heterogeniety . Adaptive End to End Streaming Transport: Unicast vs. Multicast '. Scalable Encoding

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An Efficient MCTF Architecture using Processing Frame Re-configuration (처리 프레임의 재구성을 통한 효율적인 MCTF 구조)

  • Seo, Young-Ho;Choi, Hyun-Jun;Kim, Young-Hyun;Kim, Dong-Wook
    • Proceedings of the IEEK Conference
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    • 2005.11a
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    • pp.335-338
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    • 2005
  • In this paper, we proposed a new MCTF (Motion Compensated Temporal Filtering) technique and its hardware (H/W) architecture for SVC (Scalable Video Coding). Since the proposed MCTF Kernel has a extensible architecture, it executes temporal filtering using (5,3) and (3,1) lifting operation. Also it has the same output data rate as the input, and it can continuously produce filtered frames after some latency time. Since the proposed architecture has simpler architecture than previous ones, it is easily mapped into H/W and has optimized memory usage rate and low cost.

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